The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X25-10TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø80mm bore, 25mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X25-10 is an 80 mm bore double-acting cylinder with a single piston rod and a rear-cap adjusting screw that provides up to 10 mm of field-adjustable stroke-end control. This model delivers 2513 N of push force at 0.5 MPa and uses a 25 mm diameter rod with PT3/8 ports, making it a robust choice for applications where the final stop position must be dialled in precisely during commissioning or changeover.
At its nominal 25 mm stroke, the cylinder body length A is 239 mm, and the integrated air cushion (28 mm long) decelerates the piston smoothly. The centre trunnion (TC) mounting, supplied with the TCM1 bracket, allows the cylinder to pivot, accommodating angular movement in the driven linkage without side-loading the rod.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X25-10TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 25 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×25 | Nominal (maximum) stroke length in mm. |
| -10 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 10 mm rear adjustment screw allows technicians to dial in the exact retract position for clamping or pressing fixtures without shims, speeding up initial machine setup and reducing mechanical parts.
With the TC centre trunnion mount, this cylinder can pivot to actuate a diverter gate on a conveyor. The adjustable stroke fine-tunes the gate's open angle to handle different package sizes.
In high-cycle assembly cells, the 10 mm adjustment range can be used to compensate for wear on tooling or gripper pads over time, maintaining consistent part contact without replacing the cylinder.
This 80 mm bore adjustable-stroke cylinder is a strong mid-range actuator. If your application requires less force, the 63 mm bore SCJ series offers 1559 N push at 0.5 MPa; for higher demands, the 100 mm bore provides 3927 N. The SCJ80X25-10 is ideal when you need to fine-tune the stroke end position on the machine, a capability a fixed-stroke SC series cylinder cannot offer without external hard stops. For a direct replacement, match the 80 mm bore, 25 mm nominal stroke, 10 mm adjustment range, PT3/8 ports, and the TC centre trunnion mounting configuration.
Adjustable-stroke checklist
The push force is 2513 N at 0.5 MPa and 4523 N at the maximum operating pressure of 0.9 MPa. The pull force is slightly lower at 2268 N at 0.5 MPa due to the area of the 25 mm piston rod.
You can, provided the mounting and porting match. The SCJ80X25-10 has a slightly longer body to house the adjusting screw and offers the added benefit of field-adjustable stroke end, but it is not a dimensional drop-in for the fixed-stroke SC version. Always check the A dimension.
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